package kr.hkit.powerjava.chapter24.work.dao;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import kr.hkit.powerjava.chapter24.work.vo.Department;
import kr.hkit.powerjava.chapter24.work.vo.Student;

public class DepartmentDao implements InterfaceDao<Department> {
	private ArrayList<Department> lists;
	private static final String FILE_NAME = "DepartmentList.dat";

	@Override
	public void insertItem(Department item) {
		if (!lists.contains(item)) {
			lists.add(item);
		} else {
			System.out.println("중복");
		}

	}

	@Override
	public void deleteItem(Department item) {// idx는 삭제할 학번

		lists.remove(item);
	}

	@Override
	public void updateItem(Department item) {
		lists.set(lists.indexOf(item), item);

	}

	@Override
	public Department searchItem(Department item) {
		// TODO Auto-generated method stub
		return lists.get(lists.indexOf(item));
	}

	@Override
	public void prnItemList(Comparator<Department> comp) {
		if (comp == null) {
			Collections.sort(lists);
		} else {
			Collections.sort(lists, comp);
		}
		for (Department std : lists) {
			System.out.println(std);
		}

	}

	@Override
	public void loadFile() {
		ObjectInputStream ois = null;
		try {
			ois = new ObjectInputStream(new BufferedInputStream(
					new FileInputStream(FILE_NAME)));
			lists = (ArrayList<Department>) ois.readObject();
		} catch (FileNotFoundException e) {
			try {
				new File(DepartmentDao.FILE_NAME).createNewFile();
				lists = new ArrayList<>();
			} catch (Exception e1) {
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (ois != null)
				try {
					ois.close();
				} catch (Exception e) {
				}
		}
	}

	@Override
	public void saveFile() {
		ObjectOutputStream oos = null;
		try {
			oos = new ObjectOutputStream(new BufferedOutputStream(
					new FileOutputStream(FILE_NAME)));
			oos.writeObject(lists);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (oos != null)
				try {
					oos.close();
				} catch (Exception e) {
				}
		}

	}

}
